I was thinking here... I had checked the PAL token's value on the market at the beginning of last week (while it still couldn't be used for getting MinnowSupport upvotes), and it was very low (I think it was around 0.02 STEEM or something like that). Now, it's being sold for more than 0.3 STEEM each. Since Steem Monsters/Splinterlands is a project that also grows very fast, I think the same thing may happen to SPT once it gets a special use. It might be a good idea to accumulate SPT now that it's value on the market is low and it's easier to get.